#fade { /*--Transparent background layer--*/  
    display: none; /*--hidden by default--*/
    background: #FFF;
    position: fixed; 
    left: 0; 
    top: 0;
    width: 100%; 
    height: 100%;
    opacity: .80;
    z-index: 9999;
}  

#fade1 { /*--Transparent background layer--*/  
    display: none; /*--hidden by default--*/
    background: url("../images/ajax-loader_2.gif") #FFF no-repeat center ;
    position: fixed; 
    left: 0; 
    top: 0;
    width: 100%; 
    height: 100%;
    opacity: .80;
    z-index: 9999;
}

/*--Making IE6 Understand Fixed Positioning--*/
*html #fade {
    position: absolute;
}
*html .popup_block {
    position: absolute;
}